38 FDUL/VFXR/FDUG/VFXG/AFR/AFG Main features CG Drives & Automation, 01-7318-01r1
7.15 Fault signals
The AFR/AFG provides separate fault signals for specific
AFR/AFG related trips:
•
Supply error - Synchronization failure due to supply
error problems
.
• Sup Chk Err - Synchronization failure due to
frequency or phase sequence mismatch.
• Sync error - Synchronization failure due to
overcurrent.
• AutoID error - Failure during Auto Identification Run,
i.e. supply not correctly identified.
• Sup F Err - Failure due to too much variation in supply
frequency.
• Sup U Err - Failure due to too much variation in supply
voltage.
• GCP xxx - Fault signal indicating that grid code related
protection is activated/triggered.
• URVT - Under voltage ride through error. Grid voltage
went outside the permitted voltage-time zone of Fig. 44
• OVRT - Over-voltage ride through error. Grid voltage
went outside the permitted voltage-time zone of Fig. 44.
• Passive AID - Island detection error based on passive
method.
• Active AID - Island detection error based on active
method.
• Resistor Err - Brake resistor over load protection error.
• Open CB - Open circuit breaker detected on the supply
side.
• PLL Not lock - AFR/AFG waiting for the PLL to be
locked. (PLL not ready yet).
7.16 Supply voltage
measurement board
(SVMB) (synchronizing/
bypass option)
Supply voltage measurement board (SVMB) is mandatory
for AFG/FDUG/VFXG operation whereas it is optional for
AFR/FDUL/VFXR operation. In case of AFR/FDUL/
VFXR, as mentioned in section 7.7 voltage measurement is
required for under voltage ride through function. Adding
voltage measurement board offers following additional
features
• AFR/FDUL/VFXR as regenerative unit i.e. DFE mode
used in motor operation and AFR active in generator
operation.
• Faster supply ID-Run and supply synchronization.
• Improved performance/synchronization if VSI (DC-
link) is already loaded before synchronization.
• In case of AFG/FDUG/VFXG, SVMB ver.2 adds grid
code functionality.
SVMB exists in two different variants i.e. ver.1 and ver.2.
SVMB ver.2 is developed for AFG/FDUG/VFXG
applications but can be used with AFR/FDUL/VFXR.
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